garmin 740s

This info was also posted on an older thread relating to a different SH radio model (GX2200), but I am entering it here, too, to make it easier for GX1300 owners to find. Proper NMEA wiring between Garmin 740s and SH GX1300 is as follows: GARMIN 740s <---> Standard Horizon GX1300 NMEA...